Russian troops stepped up their bombardment of the besieged port city of Mariupol on Sunday, with Ukrainian officials saying a strike flattened an art school used as a shelter by hundreds of civilians.
Mariupol has borne some of the war’s greatest suffering. Ukrainian President Volodymyr Zelenskyy early Sunday accused Russia of war crimes over its siege, describing the attack on the city of 430,000 as “a terror that will be remembered for centuries to come.”
